An exception of type 'System.Reflection.TargetInvocationException' occurred in System.ni.dll but was not handled in user code

Question

This is the error which Visual Studio gives while running the following code for Windows Phone 8

void webClient_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)

        {

                MessageBox.Show(e.Result);
                var rootObject = JsonConvert.DeserializeObject<RootObject>(e.Result);
                var data = rootObject.trueScore;
                score = data;
        }

Please help! :(

Answer 1

The first thing to do is to catch the exception and look at the .InnerException.

At a guess: your type, or some key member of the type, is non-public